83428085 has 8 divisors (see below), whose sum is σ = 107814840. Its totient is φ = 61608384.

The previous prime is 83428063. The next prime is 83428097. The reversal of 83428085 is 58082438.

It can be written as a sum of positive squares in 4 ways, for example, as 654481 + 82773604 = 809^2 + 9098^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83428085 - 2⁶ = 83428021 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641690 + ... + 641819.

It is an arithmetic number, because the mean of its divisors is an integer number (13476855).

Almost surely, 2^83428085 is an apocalyptic number.

It is an amenable number.

83428085 is a deficient number, since it is larger than the sum of its proper divisors (24386755).

83428085 is a wasteful number, since it uses less digits than its factorization.

83428085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283527.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 83428085 is about 9133.8975798944. The cubic root of 83428085 is about 436.9557160746.

The spelling of 83428085 in words is "eighty-three million, four hundred twenty-eight thousand, eighty-five".